Remove SSL patches for old Python/Gevent support, patch ctypes find_library to find openssl libs

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shortcutme 2019-03-15 23:48:28 +01:00
parent 4ce2ef732d
commit 1c578b2b3f
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2 changed files with 66 additions and 148 deletions

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import logging
import os
import sys
import ctypes
import ctypes.util
find_library_original = ctypes.util.find_library
def getOpensslPath():
if sys.platform.startswith("win"):
lib_path = os.path.dirname(os.path.abspath(__file__)) + "/../../lib/openssl/libeay32.dll"
elif sys.platform == "cygwin":
lib_path = "/bin/cygcrypto-1.0.0.dll"
elif os.path.isfile("../lib/libcrypto.so"): # ZeroBundle OSX
lib_path = "../lib/libcrypto.so"
elif os.path.isfile("/opt/lib/libcrypto.so.1.0.0"): # For optware and entware
lib_path = "/opt/lib/libcrypto.so.1.0.0"
else:
lib_path = "/usr/local/ssl/lib/libcrypto.so"
if os.path.isfile(lib_path):
return lib_path
if "ANDROID_APP_PATH" in os.environ:
try:
lib_dir = os.environ["ANDROID_APP_PATH"] + "/../../lib"
return [lib for lib in os.listdir(lib_dir) if "crypto" in lib][0]
except Exception as err:
logging.debug("OpenSSL lib not found in: %s (%s)" % (lib_dir, err))
if "LD_LIBRARY_PATH" in os.environ:
lib_dir_paths = os.environ["LD_LIBRARY_PATH"].split(":")
for path in lib_dir_paths:
try:
return [lib for lib in os.listdir(path) if "libcrypto.so.1.0" in lib][0]
except Exception as err:
logging.debug("OpenSSL lib not found in: %s (%s)" % (path, err))
lib_path = (
find_library_original('ssl.so.1.0') or find_library_original('ssl') or
find_library_original('crypto') or find_library_original('libcrypto') or 'libeay32'
)
return lib_path
def patchCtypesOpensslFindLibrary():
def findLibraryPatched(name):
if name == "ssl" or name == "crypto":
return getOpensslPath()
else:
return find_library_original(name)
ctypes.util.find_library = findLibraryPatched
patchCtypesOpensslFindLibrary()
def openLibrary():
lib_path = getOpensslPath()
logging.debug("Opening %s..." % lib_path)
ssl_lib = ctypes.CDLL(lib_path, ctypes.RTLD_GLOBAL)
return ssl_lib

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# https://journal.paul.querna.org/articles/2011/04/05/openssl-memory-use/
# Disable SSL compression to save massive memory and cpu
import logging
import os
import sys
import ctypes
import ctypes.util
from Config import config
def getLibraryPath():
if sys.platform.startswith("win"):
lib_path = os.path.dirname(os.path.abspath(__file__)) + "/../lib/opensslVerify/libeay32.dll"
elif sys.platform == "cygwin":
lib_path = "/bin/cygcrypto-1.0.0.dll"
elif os.path.isfile("../lib/libcrypto.so"): # ZeroBundle OSX
lib_path = "../lib/libcrypto.so"
elif os.path.isfile("/opt/lib/libcrypto.so.1.0.0"): # For optware and entware
lib_path = "/opt/lib/libcrypto.so.1.0.0"
else:
lib_path = "/usr/local/ssl/lib/libcrypto.so"
if os.path.isfile(lib_path):
return lib_path
if "ANDROID_APP_PATH" in os.environ:
try:
lib_dir = os.environ["ANDROID_APP_PATH"] + "/../../lib"
return [lib for lib in os.listdir(lib_dir) if "crypto" in lib][0]
except Exception, err:
logging.debug("OpenSSL lib not found in: %s (%s)" % (lib_dir, err))
if "LD_LIBRARY_PATH" in os.environ:
lib_dir_paths = os.environ["LD_LIBRARY_PATH"].split(":")
for path in lib_dir_paths:
try:
return [lib for lib in os.listdir(path) if "libcrypto.so.1.0" in lib][0]
except Exception, err:
logging.debug("OpenSSL lib not found in: %s (%s)" % (path, err))
return (
ctypes.util.find_library('ssl.so.1.0') or ctypes.util.find_library('ssl') or
ctypes.util.find_library('crypto') or ctypes.util.find_library('libcrypto') or 'libeay32'
)
def openLibrary():
lib_path = getLibraryPath() or "libeay32"
logging.debug("Opening %s..." % lib_path)
ssl_lib = ctypes.CDLL(lib_path, ctypes.RTLD_GLOBAL)
return ssl_lib
def disableSSLCompression():
try:
openssl = openLibrary()
openssl.SSL_COMP_get_compression_methods.restype = ctypes.c_void_p
except Exception as err:
logging.debug("Disable SSL compression failed: %s (normal on Windows)" % err)
return False
openssl.sk_zero.argtypes = [ctypes.c_void_p]
openssl.sk_zero(openssl.SSL_COMP_get_compression_methods())
logging.debug("Disabled SSL compression on %s" % openssl)
if config.disable_sslcompression:
try:
disableSSLCompression()
except Exception as err:
logging.debug("Error disabling SSL compression: %s" % err)
# https://github.com/gevent/gevent/issues/477
# Re-add sslwrap to Python 2.7.9
__ssl__ = __import__('ssl')
try:
_ssl = __ssl__._ssl
except AttributeError:
_ssl = __ssl__._ssl2
OldSSLSocket = __ssl__.SSLSocket
class NewSSLSocket(OldSSLSocket):
# Fix SSLSocket constructor
def __init__(
self, sock, keyfile=None, certfile=None, server_side=False,
cert_reqs=__ssl__.CERT_REQUIRED, ssl_version=2, ca_certs=None,
do_handshake_on_connect=True, suppress_ragged_eofs=True, ciphers=None,
server_hostname=None, _context=None
):
OldSSLSocket.__init__(
self, sock, keyfile=keyfile, certfile=certfile,
server_side=server_side, cert_reqs=cert_reqs,
ssl_version=ssl_version, ca_certs=ca_certs,
do_handshake_on_connect=do_handshake_on_connect,
suppress_ragged_eofs=suppress_ragged_eofs, ciphers=ciphers
)
def new_sslwrap(
sock, server_side=False, keyfile=None, certfile=None,
cert_reqs=__ssl__.CERT_NONE, ssl_version=__ssl__.PROTOCOL_SSLv23,
ca_certs=None, ciphers=None
):
context = __ssl__.SSLContext(__ssl__.PROTOCOL_SSLv23)
context.options |= __ssl__.OP_NO_SSLv2
context.options |= __ssl__.OP_NO_SSLv3
context.verify_mode = cert_reqs or __ssl__.CERT_NONE
if ca_certs:
context.load_verify_locations(ca_certs)
if certfile:
context.load_cert_chain(certfile, keyfile)
if ciphers:
context.set_ciphers(ciphers)
caller_self = inspect.currentframe().f_back.f_locals['self']
return context._wrap_socket(sock, server_side=server_side, ssl_sock=caller_self)
# Re-add sslwrap to Python 2.7.9+
if not hasattr(_ssl, 'sslwrap'):
import inspect
_ssl.sslwrap = new_sslwrap
__ssl__.SSLSocket = NewSSLSocket
logging.debug("Missing SSLwrap, readded.")
# Add SSLContext to gevent.ssl (Ubuntu 15 fix)
try:
import gevent
if not hasattr(gevent.ssl, "SSLContext"):
gevent.ssl.SSLContext = __ssl__.SSLContext
logging.debug("Missing SSLContext, readded.")
except Exception, err:
pass
# Redirect insecure SSLv2 and v3
__ssl__.PROTOCOL_SSLv2 = __ssl__.PROTOCOL_SSLv3 = __ssl__.PROTOCOL_SSLv23
logging.debug("Python SSL version: %s" % __ssl__.OPENSSL_VERSION)